What kinds of homes are in Diamond Bar, CA?

Name: Types of homes in Diamond Bar, CA, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Diamond Bar, CA has 18,969 (±566) homes (2020–2024 American Community Survey).

That is about 1,275 homes per square mile of land.

69.7% are detached single-family houses.

6.0% are in buildings of two to four units.

10.2% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 18,969 (±566)
Detached houses: 69.7%
2–4 unit buildings: 6.0%
5+ unit buildings: 10.2%

Homes in Diamond Bar by building size

Housing units by units in structure, 2020–2024
Building type	Diamond Bar	Los Angeles County	California	United States
Single-family, detached	69.7% (±2.4 points)	47.3%	57.0%	61.3%
Single-family, attached (townhouse, rowhouse)	12.2% (±1.9 points)	6.6%	7.4%	6.2%
2 units	0.6% (±0.6 points)	2.6%	2.4%	3.4%
3 or 4 units	5.4% (±1.2 points)	5.9%	5.4%	4.3%
5 to 9 units	2.9% (±0.9 points)	7.8%	5.7%	4.5%
10 to 19 units	1.9% (±0.9 points)	7.6%	4.9%	4.3%
20 or more units	5.4% (±1.6 points)	20.5%	13.6%	10.3%
Mobile home	1.9% (±0.5 points)	1.6%	3.5%	5.6%
Boat, RV, van, etc.	0.0% (±0.2 points)	0.1%	0.1%	0.1%

In Diamond Bar, the share of homes in buildings of five or more units is lower than in Los Angeles County (35.9%).

It is also lower than in California (24.2%).

It is lower than the national figure (19.1%).

Homes in buildings of 5 or more units in places near Diamond Bar

Nearest places with a published estimate, compared with Diamond Bar
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Diamond Bar	—	10.2% (±2.0 points)	—
Walnut	3.3 mi	2.6% (±1.1 points)	Lower
Rowland Heights	4.7 mi	15.1% (±2.5 points)	Higher
South San Jose Hills	5.0 mi	0.8% (±1.2 points)	Lower
Pomona	5.1 mi	21.2% (±1.8 points)	Higher
Brea	5.9 mi	26.6% (±2.9 points)	Higher
West Covina	6.5 mi	21.6% (±1.9 points)	Higher
Chino Hills	6.6 mi	12.2% (±1.8 points)	Not measurably different
Valinda	7.0 mi	3.2% (±2.0 points)	Lower

Nearby places with a measurably lower figure: Walnut, CA (2.6%), South San Jose Hills, CA (0.8%), Valinda, CA (3.2%).

Nearby places with a measurably higher figure: Rowland Heights, CA (15.1%), Pomona, CA (21.2%), Brea, CA (26.6%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes in buildings of 5 or more units across Los Angeles County, place by place

Rank	Place	Homes in buildings of 5 or more units
87	Agoura Hills	11.3% (±2.8 points)
88	La Verne	11.2% (±2.7 points)
89	East Los Angeles	11.0% (±1.2 points)
90	San Fernando	10.5% (±3.1 points)
91 (tie)	Castaic	10.4% (±3.2 points)
91 (tie)	East Rancho Dominguez	10.4% (±3.9 points)
93	Diamond Bar	10.2% (±2.0 points)
94	South El Monte	9.6% (±2.7 points)
95	West Whittier-Los Nietos	9.3% (±2.8 points)
96	Rosemead	9.0% (±1.5 points)
97	Manhattan Beach	8.9% (±3.0 points)
98 (tie)	Temple City	8.7% (±1.9 points)
98 (tie)	East Pasadena	8.7% (±5.7 points)

Showing 13 of 140 places in Los Angeles County, ranked from highest to lowest.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about Diamond Bar

How many homes are in Diamond Bar?

Diamond Bar, CA has an estimated 18,969 (±566) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Diamond Bar houses or apartments?

69.7% are detached houses and 12.2% attached houses, while 16.2% are in buildings of two or more units.

How many two-family and small multifamily homes are in Diamond Bar?

6.0% of homes in Diamond Bar are in buildings of two to four units, the small rental buildings that are often owner-occupied.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Diamond Bar city, California

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Diamond Bar city, California (place:19192, in state:06).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0001E, DP04_0001M, DP04_0007PE, DP04_0007PM, DP04_0008PE, DP04_0008PM, DP04_0009PE, DP04_0009PM, DP04_0010PE, DP04_0010PM, DP04_0011PE, DP04_0011PM, DP04_0012PE, DP04_0012PM, DP04_0013PE, DP04_0013PM, DP04_0014PE, DP04_0014PM, DP04_0015PE, DP04_0015PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.